Are you permitted to change lanes at a point marked in this way?

In the video you are joining a dual carriageway via a slip road; beyond signs A-7 and C-5 you are driving in the far right lane, which is separated from the neighbouring lane by a solid line, and other cars are passing you in the lanes of the main roadway, among them a black car in the far left lane. You are not allowed to change lanes at a point marked like this. The answer is: no.

The Regulation on road signs and signals states that the single solid line P-2 separates lanes in the same direction and means that you must not cross this line or drive on it. A solid line between lanes in the same direction is painted where changing lanes would be particularly dangerous - near interchanges, at the start of an acceleration lane and at exits. As long as the line is solid, you stay in your lane and speed up, and you move into the neighbouring lane only where the line becomes broken. The Road Traffic Act adds that changing lanes requires you to give way to a vehicle travelling in the lane you intend to enter and to signal the manoeuvre with the indicator; before moving over, you check the mirror and the blind spot, because vehicles on the main roadway are travelling much faster than you on the slip road.

Legal basis: § 86 para. 3 of the Regulation on road signs and signals; Art. 22 para. 4 and 5 of the Road Traffic Act (Prawo o ruchu drogowym)